Australian Backpack

A sex act in which a male is mounted by their partner in a "piggyback" style, wrapping their legs around the the front of the body, and masturbates the male with the arches of their feet (to completion).
My quads are exhausted after that Australian Backpack I got from Meghan last night
by megsydmillard January 23, 2016
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Australian baptism

When someone is pooped on by a koala or another native Australian animal being "blessed" with the gift of Australia.
"A koala just pooped on me!"
"Congratulations on receiving your Australian baptism!"
by nickidel07 March 19, 2016
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Shitty Australian

This is when you are naked from the waist down wearing super thick boots. You then stand on the toilet to take a shit because you are afraid that an australian sized spider will crawl up and bite you on the ass.
"Sara saw a video online of a giant spider swimming in the toilet after some Australian flushed. Now she only takes a shitty australian when she has to poop."
by The Dark Naga March 04, 2015
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Australian Shave

It's like a shave, but down under
She didn't like her boyfriends bush so, she told him to get an Australian shave
by ThePotatoChip January 04, 2017
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Australian Plumber

A sexual act where 2 men get into a 69 position and blow really hard down each other's assholes.

Originates from the fact it was first performed by an Australian and an Italian.
Matt: Hey, wanna make out?
Dan: Wash your mouth first, remember we just did the Australian Plumber.
by Rich Stone July 19, 2013
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Australian Lottery

When a gay man finds that his date has a very large penis.

E.g. Big prize down under
Gay guy 1: "So how did it go with your new boyfriend last night?"
Gay guy 2: "Faaabulous!!! He was kind of a neanderthal, but when he took off his pants, I pretty much won the Australian Lottery. He explored my outback all night."
by paco90 January 20, 2011
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